Anindya,
Welcome! I've made you an admin.
The group and all discussions are public, so anyone can see all
comments just by going to the URL
http://groups.google.com/group/mahabharata-discussion/
. Your friends can join the group and post without any special
permission. They are very welcome to join, they shouldn't be shy!
They are also welcome to "lurk" and follow the discussions, but if
they join up they can also also post their opinions or questions and
enrich the group. I think we can start off with 4 admins but maybe
more later.